Re: [9front] rpi4B (4GB) model

[cinap_lenrek@felloff.net]

> I cannot find '#ec/*memsize', found only
> 8250.nr_uarts, bcm2708_fb.fbdepth, bcm2708_fb.fbheight, bcm2708_fb_fbswap, bcm2708_fb_fbwidth
> cma, coherent_pool, console, smsc95xx.macaddr, vc_mem.mem_base, vc_mem.mem_size.

ok,

this means we couldnt detect the memory size from device tree.

looks like they changed the device tree names arround:

https://github.com/raspberrypi/linux/commit/4b17654f51fd87c42cda3217b0863e6aa1df49b9#diff-ac03c9402b807c11d42edc9e8d03dfc7

you can try the following patch?

diff -r f9f922fd127d sys/src/9/bcm/bootargs.c
--- a/sys/src/9/bcm/bootargs.c	Mon Apr 20 00:08:35 2020 +0200
+++ b/sys/src/9/bcm/bootargs.c	Tue Apr 21 10:59:21 2020 +0200
@@ -89,7 +89,8 @@
 static void
 devtreeprop(char *path, char *key, void *val, int len)
 {
-	if(strcmp(path, "/memory") == 0 && strcmp(key, "reg") == 0){
+	if((strcmp(path, "/memory") == 0 || strcmp(path, "/memory@0") == 0)
+	&& strcmp(key, "reg") == 0){
 		if(findconf("*maxmem") < 0 && len > 0 && (len % (3*4)) == 0){
 			uvlong top;
 			uchar *p = val;